One-Family Standard Service Calculation - Crash Course 2020

This video shows a quick, simple approach to an electrical service calculation, along with multiple examples. The use of a handy table format makes it easy to understand and implement into real-world applications, and likewise is very useful for study and exam prep.

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Electrical, NEC, Exam, Test, Load, 2020, Table, Feeder, Master, Journeyman, Apprentice, Electrician, Calc, Calculation, Service

[simply.electrical]

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[griffmustard]

Thanks for taking the time to do this.
Some people charge lots of money in Books and Videos for this type of information.
You are very much appreciated.

[ericapenado]

You said on the motor part (13:54)
Table 240.248

It’s 430.248
😅 I could find it and you said simple lol😂
I’m on a role watching your video. And I like how you simplify things
Your awesome

[Profanity]

EXAMPLE #2 With the EV charger at 100% and the range from column B 220.55 my demand load is 49, 860VA for a 207.75amp load for service disconnect of 225 OCPD conductors are 3/0 Cu 4 awg GEC

[ericpolk]

I had a range question come up below could you tell me if I'm right or wrong ?
for a single range shouldn't the 12kw x 1.10 be 8kw x1.10?

Single / Standard Method

The Problem:

14 kW - 12 kW = 2 kW

2 × 5% = 10%

Apply the adjustment to the range load in Column C:

12 kW × 1.10 = 13.2 kW

[Bauyrzhan]

on 10:53, 7KW range should be 80% = 5600VA as per 220.55 column B?

[rideoregonfirst]

Final range calc did not notice Note #6 on table 220.55 that states a single cooktop and two wall ovens can add all KW and treat as ONE range. So....cooktop of 7200 and ovens of 11, 000 equal 18, 200 total VA, with demand at just 10, 800VA (8KVA+2800VA)

[mattmason]

What about multiple motors in addition to the heat pump? I had one on a test that had two grinder pump motors and a well motor.

[AddieShipley]

When do we take 310.12 (B) 83% into consideration?

[mehrdadzamani]

in 2023 NEC (220.53) the demand factor shall not apply to EVSE , THANKS