April 4, 2018 — Tackle March 2018’s Code Conundrum…if you dare!

QUESTION 1
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.

QUESTION 2
Bare or insulated conductors not enclosed in grounded metal shall be used in service rooms accessible only to authorized persons.

a) True
b) False

QUESTION 3
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.

a) True
b) False

Answers to this month’s questions in April’s Electrical Business. MEANTIME, here are the answers to the February 2018 Code Conundrum!

Question 1
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.

Question 2
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.

Question 3
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?!?