What is Arc Flash ? - Mike Holt EnterprisesArc Flash is the result of a rapid release of energy due to an arcing fault between
a ... To perform an arc flash hazard analysis , data is collected about the facility's ...
High-Pitched Sound When Lights Turned On - Mike Holt EnterprisesMike, I had a call from my son today regarding his experience in installing a new
light fixture and dimmer switch. The fixture has five, 60-watt ...
Mike Holt Enterprises HomeWelcome to Mike Holt Enterprises. Your One-Stop resource for Electrical Training
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Electrical Outlet Height / Garage - Mike Holt's Forum - Mike Holt I have search the forum for the correct answer but no one is sure. What is the
height requirement for an electrical outlet in the garage ? Garage GFCI Receptacles 10 posts7 Oct 2011 receptacle height 10 posts16 Apr 2009 Garage Receptacle Mounting Height 10 posts30 Oct 2007More results from forums.mikeholt.com
Delta Transformer Calculations - Mike Holt EnterprisesPhase Current : The current flowing through the transformer winding (Figure 12–3
, D1 and D2). In a delta system, the phase current is less than the line current ...
GFCI Receptacle Behind Vending Machine - Mike Holt's Forum - Mike Reference NEC 2011 Article 210.8. Is a GFCI receptacle located behind a
vending machine considered "readily accessible"? GFCI for Washing machine 10 posts18 Feb 2013 GFCI receptacle for an ice machine 9 posts13 May 2011Washing Machine GFI Tripping10 posts5 Aug 2010Washing machine gfci 8 posts8 Jan 2010More results from forums.mikeholt.com
Understanding the Dangers of Multiwire Branch CircuitsUnderstanding the Dangers of Multiwire Branch Circuits . By Mike Holt for EC&M
Magazine. As in life, there are no benefits without risk. Yes, multiwire circuits ...
Grounding Satellite Dish and Lead-In Cables - Mike Holt EnterprisesBy Mike Holt, for EC&M Magazine. Q1. I need to know the current NEC rules
regarding the use of RG-6 W/messenger ground wire for an 18 in. satellite dish .
Plenum - rated Power Cord - Mike Holt's Forum - Mike Holt EnterprisesGenerally we use SO, SOW, or SJT power cable for our equipment. Customer
has requested power cable plenum rated to go under computer
3 WIRING METHODS AND MATERIALS - Mike Holt EnterprisesChapter 2 provided the general rules for wiring and protection of conductors, ...
common wiring method used for residential and commercial branch circuits. ...
Electrical nonmetallic tubing is a pliable, corrugated, circular raceway made of
remove and replace wire in underground conduit ... - Mike Holt's in a tenant space, the existing underground conduit is 2" ridged under a ...
Electrical Calculations / Engineering; remove and replace wire in ...
1 Basic Principles of Motor Controls - Mike Holt EnterprisesThis unit discusses the basic concepts of motor control , including “ motor control ...
Motor Control Language. Electrical symbols, words, and line diagrams provide.
Aftermarket replacement batteries for DeWalt ????? - Mike Holt's I have seen plenty of company websites for aftermarket batteries. ... the Nano
battery /drill combo) Are there any legitimate aftermarket providers ...
Hole Sizes for Recessed Lighting - Mike Holt's Forum - Mike Holt I've only used the templates that come with the lights and have not measured
them. I have a new "Hole Pro" hole saw and would like to know if I ...
Tvss Claims Energy Savings - Update - Mike Holt EnterprisesHow do I verify and compare this to other TVSS products? www.redivoltmfg.com
..... These claims appear from Redi-Volt & Stedi - Volt on a regular basis.
Are obsolete Sylvania Panels listed for use with GE circuit I have seen some Sylvania panels with all GE breakers and am ... Any ideas on
the best route to verify what breakers are listed for use in these ...
green jelly in rope lights - Mike Holt's Forum - Mike Holt EnterprisesWell the other nite I was over having a drink and looked at the rope lighting , ther
was some kind of green jelly build up dripping from the ...
Grounding an RV Power Outlet Pedestal - Mike Holt's Forum - Mike Is it required by NEC that a ground rod or ground circuit be connected to the
ground bus on a 100 amp RV Pedestal ? The ground bus is ... Service entrance conductor meter pedestal disconnect ...1 post29 Aug 2014Power Pedestals in RV Parks6 posts5 Apr 2006Electric pedestal in mobile home park10 posts5 Oct 2005 pedestal combination meter and main10 posts3 Feb 2005More results from forums.mikeholt.com
Transformer Installation - Mike Holt Enterprisescan be a NEC challenge and transformers can extend that challenge to a new
level. ... Step 2 . Primary Protection [450.3]: The primary winding of transformers
shall be ... 45 kVA, 54A x 1.25 = 68A, 4 AWG rated 85A at 75°C, Table 310.16.
I have search the forum for the correct answer but no one is sure. What is the
height requirement for an electrical outlet in the garage ? Garage GFCI Receptacles 10 posts7 Oct 2011 receptacle height 10 posts16 Apr 2009Hazardous Area receptacle height ?6 posts1 Apr 2008 Garage Receptacle Mounting Height 10 posts30 Oct 2007More results from forums.mikeholt.com
Sheet metal drip pans over electric panels? For Sprinkler I have seen situations where "wet" sprinkler piping will "sweat" in high humidity
locations and sprinkler couplings can leak. A small drip pan ... NEC 110.26 - Piping through an electrical room10 postsDec 21, 2012 Drip Pans vs sprinkler lines - Mike Holt's Forum4 postsMar 30, 2011Electrical Room and Fire Sprinkler Piping through it4 postsJun 5, 2008Installation of Drip Pan's for elect.gear in a water ...10 postsNov 30, 2006More results from forums.mikeholt.com
What's the best conductor ? - Mike Holt's Forum - Mike Holt EnterprisesA colleague and I were discussing the other day about what metal is the best
conductor . I've always thought silver was the best, and have even ...
UL White Book - Electronic Version Available - Mike Holt EnterprisesThis Directory contains the General Guide Information for product categories in
UL's Electrical Construction Equipment and Hazardous Locations Equipment ...
Electrical Riser Diagram - Mike Holt's Forum - Mike Holt EnterprisesCan some one help me understand what is electrical riser diagram ? Does
anyone has sample PDF or DWG file which shows the electrical riser ...
Mike Holt NEC - Tom Henry's Key Word Index, 2014 EditionTom Henry s Key Word Index 2014 Edition - 14KEYW ... This book is a great
study aid for electrical exams and is specially designed to increase your speed
Requirements for Electrical Installations - Mike Holt Enterprisesauthority having jurisdiction must approve all electrical conductors and
equipment. Figure 110– ... What's the right working clearance for a given
installation? • What do the .... such as switchboards, panelboards, industrial
control panels , meter.
Just past a Ramsay test for maintenance electrical/ electronics's and math, some of the questions was things I have had to answer since school
days, or even tech school days. ... I just helped put together the Ramsey Test for
Maint. Elec and ... The potential test questions were given to us.
SCRs: What are They and How Do They Work?... – An SCR is an An SCR , or Silicon Controlled Rectifier , is a semiconductor, or integrated circuit (
IC), that allows the control of current using a small current.
Induction Cooktop noisy when the lights are on????? - Mike Holt's We wired the owners new induction cook top. Now when ... If you temporarily
replaced the dimmer with a switch , would that affect the sound?
Replacing Mercury Vapour Ballast - Mike Holt's Forum - Mike Holt Hello everyone, I have a question. Is it safe to replace mercury vapour ballast
with metal halide ballast? My office is still using MV lamp for ... Will the wrong bulbs in a fixture with a m58/h37 ...10 postsDec 10, 2013MH bulb in MV fixture8 postsApr 11, 2005More results from forums.mikeholt.com
Mike Holt NEC - 2014 National Electrical Code TabsThese peel and stick tabs are a great way to customize your Code book. ... These
National Electrical Code Tabs are compatible with the 2014 Codebooks and ...
Mike Holt NEC - Tom Henry's Key Word Index , 2014 EditionTom Henry s Key Word Index 2014 Edition - 14KEYW. Every word in the Code
book put into an index with page numbers. Now you can find it in the Code in ...
50/ 51G and 50/ 51N - Mike Holt's Forum - Mike Holt Enterpriseshi, What is the difference between 50/ 51G and 50/ 51N to protect the solid ground
transformer? I have unbalance load so which one should I ...
Home Depot Estimating Software - Mike Holt's Forum - Mike Holt So as a "thank you" for my business, Home Depot sent me an email yesterday
with a link for their estimating software. Did you know that you ...
Proper Neutral-to- Ground (Case) Connections - Mike Holt EnterprisesTo do this, you must keep the grounded (neutral) conductor separated from the
metal ... Services supplied by a grounded utility transformer must run a grounded
Double -tap meter base or feed-through panel? - Mike Holt's Forum Can the meter -base load-side lugs be tapped again, eg. with those ... On such a
job, I would use a meter /main box on the outside of the pump ...
Shower head in sauna help - Mike Holt's Forum - Mike Holt EnterprisesI installed a 220v sauna heater in a sauna room at A RESIDENCE the ... there I
now see the owner has installed a shower head in the sauna.
Article 230 - Services - Mike Holt Enterprises(2) Within a building or structure in a raceway that is encased in no less than 2 ...
be in accordance with the National Electric Safety Code (NESC), not the NEC ...
Swimming Pool Pump GFCI Breaker - Mike Holt's Forum - Mike Holt So, figuring pool pump is 2 hp 230 VAC 1PH with integral thermal ... 680.21
recently started requiring GFCI breakers on pump branch circuit of ... Three Phase Swimming Pool Pumps on GFCI Breakers 10 postsJun 19, 2014 GFCI breaker for swimming pool sub panel7 postsMay 22, 2012 Pool Heater GFCI Protection - Mike Holt's Forum9 postsApr 23, 2012Inground pool pumps 240v GFCI - Mike Holt's Forum10 postsJun 22, 2011More results from forums.mikeholt.com
AC and DC Hi Pot testing - Page 2 - Mike Holt's Forum - Mike Holt Sir, What is the deferance of doing AC and DC hi-pot testing? ... (DC, hipot , AC
hipot , VLF , Tan Delta) you are measuring the dielectric strength of the insulation.
... The lower the frequency, the higher Xc (capacitive reactance ).
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Shunt Trip Breakers ? - Mike Holt's Forum - Mike Holt EnterprisesHI Could someone tell me what use a shunt trip breaker would be used for? One
of the building we service has a shunt trip breaker used for the ... Kitchen hood - shunt trip breakers required.10 postsApr 17, 2012 shunt 10 postsMar 16, 2008 shunt trip breaker 5 postsApr 2, 2007 Shunt - trip breaker - help with connections10 postsMar 12, 2007More results from forums.mikeholt.com
Minimum wire bending radius - Mike Holt's Forum - Mike Holt I've got a situation where a contractor put in some 500 MCM wire and butchered it
pretty badly. Here are the problems, all in about a 12" area: 1 ... min. wire bend radius 4 postsJul 2, 2010Minimum Bend Radius - Page 210 postsMar 29, 2010 Conductor Bending Radius 4 postsJul 28, 2008Minimum bend radius for elec wire 4 postsJul 25, 2008More results from forums.mikeholt.com
I've got a situation where a contractor put in some 500 MCM wire and butchered it
pretty badly. Here are the problems, all in about a 12" area: 1 ... min. wire bend radius 4 postsJul 2, 2010Minimum Bend Radius - Page 210 postsMar 29, 2010Min Bend Radius 2 postsDec 15, 2009Minimum bend radius for elec wire 4 postsJul 25, 2008More results from forums.mikeholt.com
How Many Holes Can Be Bored In A Load Bearing 2 X 6 Stud ? - Mike Need to move twelve 14/2 NM cables horizontally through a exterior 2 X 6 non
insulated load bearing garage wall . Want to bore 7/8 inch holes ...
Fire Rating Conductors / Conduit - Mike Holt's Forum - Mike Holt When installed in conduit (standard building wire thhn thwn in EMT RGS) does
the conduit help to provide a " fire rating " for the cables. for
ARTICLE 250 Grounding and Bonding - Mike Holt Enterprisestive materials, such as metallic water or gas piping , steel -fram- ing members,
metal ... Author's Comment: Grounding metal parts helps drain off static electricity
Fire - rated downlight - Mike Holt's Forum - Mike Holt EnterprisesI've got plenty of 8" downlights being recessed into a fire rated ceiling. Typically
we would box around the downlight with fire rated gyp or use a ...
Male to male power cord - Mike Holt's Forum - Mike Holt EnterprisesIs there a code section than prohibits a power cord with a male plug on both ends
? I have made the statement that I will be fired before I let this ...
inverter system vs. ups - Mike Holt's Forum - Mike Holt EnterprisesWhat is the main different (electrically) between the inverter system (emergency
lighting)and the UPS system? 2. Do I have to have ATS ...
Calif Journeyman Card Renewal? - Mike Holt's Forum - Mike Holt My card expires in one month, how do I renew it? ... working and 32 hours of
continuing education to maintain status as certified electrician .
MC Cable used outside. - Mike Holt's Forum - Mike Holt EnterprisesI noticed an install done today where mc cable was used outside under a canvas
awning ... KAF- TEC Parking deck/lot cable part # 2304-42-00.
XRAY Concrete slabs - Mike Holt's Forum - Mike Holt EnterprisesHas anyone had to do this. What does it entail? Thanks. Core Drill & Rebar10 posts25 Mar 2011Boring hole - missing post-tension, rebar10 posts15 Jul 2009More results from forums.mikeholt.com
Does TurboCad equals AutoCad ? - Page 2 - Mike Holt's Forum - Mike Turbocad vs Autocad . I will take a look at Bricscad, Autocad Lite, and Revit.
Thanks for saving me alot of time. Ravenvalor Electrical Contractor
DC or AC Hi-Pot Testing - Mike Holt's Forum - Mike Holt EnterprisesWhat's the difference between DC and AC HiPot Testing ? Is there any multiplier
or percentage on a given utilization voltage to apply such test? AC vs DC Hi-Pot Test 10 posts1 Jan 2014DC Hi Pot test Vs AC VLF test for cables - Travelling ...7 posts23 Nov 2012 AC HiPot vs. DC HiPot testing of a 5kv vacuum bottle ...3 posts7 Feb 2011 AC and DC Hi Pot testing - Page 210 posts7 Jul 2008More results from forums.mikeholt.com
line voltage rope lighting heat issue - Mike Holt's Forum - Mike I've installed some line voltage rope lighting (120v) on a decorative crown-
moulding type of ledge and now the decorator wants me to put it up ...
Lighting control wiring diagram / detail ? - Mike Holt's Forum Anyone has a combination photocell / time clock detail or installation wiring
diagram to control exterior lighting? Time switch, photocell with manual override5 postsApr 22, 2014Exterior lighting control detail?6 postsOct 31, 2011120v photo cell /240 volt contactor10 postsSep 30, 2011 Photo cell control 10 postsAug 6, 2008More results from forums.mikeholt.com
Basics of Transient and Surge Protection for Coaxial LinesTypical protection for coax cables run to the top of a support structure ... This is
normally near the base of the tower or other support structure near where the ...
DC through a step up transformer - Mike Holt's Forum - Mike Holt Can DC c be converted to AC current through a step up transformer ? ... The relay
would happily chatter on and off and pulse DC into the primary of the transformer .
... and therefore the answer is no for a steady-state DC input .
Mike Holt NABCEP Continuing EducationIn order to maintain certification, NABCEP certificants must obtain 18 contact
hours of continuing education (CE) in certain PV and business-related areas