Code Conundrum March 2018 • Ray Yousef
April 4, 2018 — Tackle March 2018's Code Conundrum...if you dare!
Single-phase inverters for an interactive solar photovoltaic system are not permitted to be connected to 3-phase systems, unless:
a) designed to provide 3-phase system voltages, that are balanced within the limits of supply authority requirements.
b) in compliance with requirements of Rule 84-018.
c) in compliance with requirements of Rule 84-008.
d) all of the above.
Bare or insulated conductors not enclosed in grounded metal shall be used in service rooms accessible only to authorized persons.
Where batteries are used as a source of the emergency power supply, the batteries shall be kept in proper condition and charged 50% (minimum) at all times.
Answers to this month’s questions in April’s Electrical Business. MEANTIME, here are the answers to the February 2018 Code Conundrum!
The minimum ampacity for a feeder supplying power to an industrial building shall be based on a basic load of ___ W/m2 of the area of the outside dimension of the building, plus other special loads and electric vehicle supply equipment loads.
c) 25 W/m2. Rule 8-210, CE Code 2018.
The maximum rating for a circuit breaker protecting exposed wiring for a permanent outdoor lighting circuit is:
c) 30 A. Rule 30-1120, CE Code 2018.
All space within 6 m horizontally in any direction from dip tanks and their drain boards, with the space extending to a height of 1 m above the dip tank and drain board, is considered:
a) Zone 1. Rule 20-302, CE Code 2018.
How did YOU do?
3/3 = Master Electrician
2/3 = Journeyman
1/3 = Apprentice
0/3 = Bricklayer?!?
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