The National Electrical code.

Trade Competency Test

Chapter $1-$The National Electrical Code

See Working Clearances for problems $16$ through $20.$

$16.$ The minimum working clearance at $A$ is

$17.$ The minimum working clearance at $B$ is

$18.$ The minimum working clearance at $C$ is

$19.$ The minimum working clearance at $D$ is

$20.$ The minimum working clearance at $E$ is

CONDITION $1$ NO LIVE OR GROUNDED PARTS ON WALL

CONDITION $2$ GROUNDED PARTS ON WALL

WORKING CLEARANCES