Official merchandise

“This Coffee Is Ground-Fault Protected” Black Mug

$14.00

Start your morning with a spark of brilliance—and a touch of sarcasm. The “This Coffee Is Ground-Fault Protected” mug is the perfect companion for engineers, electricians, or anyone who lives on the edge of OSHA compliance. Featuring a glossy black ceramic body with a bold white print area, it’s as sleek as it is cheeky.

Durable black ceramic with white print area
15 oz capacity – more volts per sip
Dimensions: 4.7″ tall x 3.35″ wide
NOT microwave or dishwasher safe (safety not included)

CONFIGURATIONSELECT OPTIONS

Select color: Black

Select size: 11oz

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More details

Ceramic
11 oz mug dimensions: 3.85″ (9.8 cm) in height, 3.35″ (8.5 cm) in diameter
15 oz mug dimensions: 4.7″ (12cm) in height, 3.35″ (8.5 cm) in diameter
Dishwasher and microwave safe

Size & Fit

11 oz mug dimensions: 3.85″ (9.8 cm) in height, 3.35″ (8.5 cm) in diameter
15 oz mug dimensions: 4.7″ (12cm) in height, 3.35″ (8.5 cm) in diameter

Quality Guarantee & Returns

Fourthwall handles merchandise returns and refunds. Report a claimed print or manufacturing defect promptly and within 30 days of the product order, with your order number and clear photos. Non-defective products are generally not returnable, except where applicable law requires otherwise.